Automatic partitioning for prototyping ubiquitous computing applications

A major challenge facing ubiquitous computing R&D is the difficulty of writing software for complex, distributed applications. Automatic application partitioning can help development teams rapidly prototype distributed ubiquitous computing systems.     

Ubicon and its applications for ubiquitous social computing

The combination of ubiquitous and social computing is an emerging research area which integrates different but complementary methods, techniques, and tools. In this paper, we focus on the Ubicon platform, its applications, and a large spectrum of analysis results. Ubicon provides an extensible framework for building and hosting applications targeting both ubiquitous and social environments. We summarize the architecture and exemplify its implementation using four real-world applications built on top of Ubicon. In addition, we discuss several scientific experiments in the context of these applications in order to give a better picture of the potential of the framework, and discuss analysis results using several real-world data sets collected utilizing Ubicon.     

普适计算网络环境中的密钥预分配方案

普适计算使用大量无线传感器节点组成网络,如何保证通信安全是普适计算所面临的重大问题。提出一种普适计算环境中的三层二项式密钥预分配方案,它能够很好地完成两两簇头间密钥对的生成,同时满足对节点极小的能量损耗、极少的通信负载和存贮空间要求。该方案有效地解决了节点获取攻击问题,提高了网络恢复度;同时成功地解决了多项式密钥预分配方案中的“K-security”问题。     

Toward a framework for evaluating ubiquitous computing applications

Although they routinely evaluate pervasive or ubiquitous computing applications, researchers have difficulty comparing results rigorously and quantitatively. The lack of a widely accepted framework for user evaluations of ubiquitous applications hampers their efforts. By proposing such a framework, we hope to help researchers compare results, create ubiquitous computing design guidelines, develop effective discount evaluation techniques, understand the appropriateness of different evaluation techniques, and develop a more complete structure so they can avoid overlooking key areas of evaluation.     

Prototypes and paratypes: designing mobile and ubiquitous computing applications

Conducting user-centered design is a primary challenge in ubiquitous computing. Two kinds of prototyping techniques can be particularly effective for developing mobile and ubiquitous computing applications: compound prototypes and situated experience prototypes. Compound prototypes combine the final product's user interface (UI) with a computational implementation that runs on a separate system without the resource constraints of the target device. This model lets researchers and designers evaluate a new application's physicality and aesthetics as well as its functionality. Situated experience prototypes, or paratypes, include experimental protocols that attempt to reproduce user interaction with the system in real situations, and can optionally use common prototyping instruments such as paper mock-ups or physical props. Using our Personal Audio Loop (PAL) project as a case study, we discuss how you can fruitfully employ compound prototypes and paratypes when designing and developing mobile and ubiquitous computing applications.